rights. >>> that sex scandal that brought down david petraeus continues to grow and it continues to get more bizarre. now another high level military commander is under investigation. emily smith has the new twists in this case. >> reporter: in simple terms this is a story about a top general david petraeus, his successor john allen and two women. the fbi, cia, pentagon, the white house and congress. >> i am puzzled by what has occurred in the fbi investigation. >> reporter: the form e director admitted to an affair with broadwell which came to light when the fbi investigated what were described as jealous e-mails that broadwell sent to kelley. now allen is under investigation for sending e- mails to kelley. authorities are scouring 20 to 30,000 pages of document. >> it makes you wonder how he would have the time to do it and motivation to do that from afar. >> reporter: the news about allen which president obama learned about the same day petraeus resigned has put allen's nomination to be nato's stream commander on hold. he remains on duty in afghanistan. >> the president has great